Use 'sell on' when dealing with items you bought used and want to sell again, not new items.

Secondhand Sale

'Sell on' implies a more personal or individual sale rather than a business to customer sale.

Personal Transactions

'Sell on' in this context means convincing others, often used for ideas or abstract concepts.

This usage of 'sell on' often appears in professional or business contexts, such as meetings.

When a business 'sells on' terms like credit or discount, it's a strategic decision to attract customers.

Using 'sell on' indicates a benefit for the customer, often making the deal more attractive.

'Sell on' conditions like promotions are marketing tactics designed to boost sales or clear stock.